public class Example3_5 {
    public static void main(String args[]) {
	long sum = 0, a = 8, item = a, n = 12, i = 1;
	for(i=1;i<=n;i++) {
		sum = sum + item;
		item = item * 10 + a;
	}
        System.out.println(sum);
    }
}
